Excel won't allow them with no parameters.
In Calc:
- SUM() is 0,
- MAX()/MIN() gives Err:511.
Save them to XLSX as SUM(0), MAX(#VALUE!) and MIN(#VALUE!).
Change-Id: I0f0d05290b67684df294611bd0612090abf1a672
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/198543
Reviewed-by: Aron Budea <aron.budea@collabora.com>
Tested-by: Jenkins